A Method and Device for Measuring MPEG Noise Strength of Compressed Digital Image

摘要

A method and system is provided for estimating the strength of block artifacts at each block boundary, based on global and local edge statistics computed from the input image (frame or field picture) in the spatial domain. Such a method systemically measures the strength of the compression artifacts that are associated with block-based compression/coding schemes such as JPEG, MPEG, and H.26x.